2865283938421 has 2 divisors, whose sum is σ = 2865283938422. Its totient is φ = 2865283938420.

The previous prime is 2865283938403. The next prime is 2865283938457. The reversal of 2865283938421 is 1248393825682.

2865283938421 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2592840652900 + 272443285521 = 1610230^2 + 521961^2 .

It is a cyclic number.

It is not a de Polignac number, because 2865283938421 - 2⁹ = 2865283937909 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2865283938421.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2865283938481) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1432641969210 + 1432641969211.

It is an arithmetic number, because the mean of its divisors is an integer number (1432641969211).

Almost surely, 2^{2865283938421} is an apocalyptic number.

It is an amenable number.

2865283938421 is a deficient number, since it is larger than the sum of its proper divisors (1).

2865283938421 is an equidigital number, since it uses as much as digits as its factorization.

2865283938421 is an evil number, because the sum of its binary digits is even.

The product of its digits is 39813120, while the sum is 61.

The spelling of 2865283938421 in words is "two trillion, eight hundred sixty-five billion, two hundred eighty-three million, nine hundred thirty-eight thousand, four hundred twenty-one".